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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Saturday, 01 October 2039 · astronomical night 20:35 → 05:46 (9.17 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:35–20:05: quality 0.1M31 20:05–20:40: quality 0.2M31 20:40–22:50: quality 0.5M31 22:50–03:25: quality 0.4M31 03:25–05:50: quality 0.5M31 05:50–06:20: quality 0.3M31 06:20–06:55: quality 0.1observe M31 23:35–01:20M42M42 02:30–02:55: quality 0.3M42 02:55–03:20: quality 0.4M42 03:20–04:10: quality 0.5M42 04:10–05:50: quality 0.6M42 05:50–06:20: quality 0.3M42 06:20–06:55: quality 0.1observe M42 04:50–06:20M45M45 22:55–23:05: quality 0.2M45 23:05–23:35: quality 0.3M45 23:35–01:35: quality 0.4M45 01:35–04:15: quality 0.5M45 04:15–05:50: quality 0.6M45 05:50–06:20: quality 0.3M45 06:20–06:55: quality 0.1observe M45 01:20–03:05NGC 7000NGC 7000 19:35–20:05: quality 0.1NGC 7000 20:05–20:40: quality 0.3NGC 7000 20:40–20:45: quality 0.7NGC 7000 20:45–23:35: quality 0.6NGC 7000 23:35–03:30: quality 0.5NGC 7000 03:30–04:00: quality 0.4NGC 7000 04:00–04:35: quality 0.3observe NGC 7000 20:05–21:50V1057 CygV1057 Cyg 19:35–20:05: quality 0.1V1057 Cyg 20:05–20:40: quality 0.3V1057 Cyg 20:40–20:45: quality 0.7V1057 Cyg 20:45–23:30: quality 0.6V1057 Cyg 23:30–03:30: quality 0.5V1057 Cyg 03:30–04:00: quality 0.4V1057 Cyg 04:00–04:35: quality 0.3observe V1057 Cyg 21:50–23:35M33M33 20:20–20:40: quality 0.1M33 20:40–21:00: quality 0.3M33 21:00–04:15: quality 0.4M33 04:15–05:50: quality 0.5M33 05:50–06:05: quality 0.2M33 06:05–06:20: quality 0.3M33 06:20–06:55: quality 0.1observe M33 03:05–04:50scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
19:00–20:05 — nothing worth pointing at — 1.08
20:05–21:50 NGC 7000 1.75 0.53
21:50–23:35 V1057 Cyg 1.75 0.57
23:35–01:20 M31 1.75 0.41
01:20–03:05 M45 1.75 0.48
03:05–04:50 M33 1.75 0.44
04:50–06:20 M42 1.5 0.52
06:20–07:20 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 50 unknown 20:40–05:50 (marginal) 89.7° at 01:25 44.3° 1.75
M42 Great Orion Nebula 31 unknown 05:05–05:50 (good) 42.9° at 06:15 78.1° 1.5
M45 Seven Sisters 55 unknown 05:20–05:50 (good) 72.5° at 04:25 56.4° 1.75
NGC 7000 North America Nebula 65 unknown 20:40–21:55 (good) 87.2° at 21:40 65.4° 1.75
V1057 Cyg 65 unknown 20:40–21:55 (good) 87.3° at 21:40 65.3° 1.75
M33 Triangulum Pinwheel 48 unknown 20:45–05:50 (marginal) 79.2° at 02:15 37.6° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-10-01"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.